<?php

/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2014 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    1.8.0, 2014-03-02
 */
PHPExcel_Autoloader::Register();
//    As we always try to run the autoloader before anything else, we can use it to do a few
//        simple checks and initialisations
//PHPExcel_Shared_ZipStreamWrapper::register();
// check mbstring.func_overload
if ( ini_get( 'mbstring.func_overload' ) & 2 ) {
	throw new PHPExcel_Exception( 'Multibyte function overloading in PHP must be disabled for string functions (2).' );
}
PHPExcel_Shared_String::buildCharacterSets();

/**
 * PHPExcel_Autoloader
 *
 * @category    PHPExcel
 * @package     PHPExcel
 * @copyright   Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Autoloader {

	/**
	 * Register the Autoloader with SPL
	 *
	 */
	public static function Register() {
		//if (function_exists('__autoload')) {
		//    Register any existing autoloader function with SPL, so we don't get any clashes
		// spl_autoload_register('__autoload');
		// }
		//    Register ourselves with SPL
		//return spl_autoload_register(array('PHPExcel_Autoloader', 'Load'));
		$functions = spl_autoload_functions();
		foreach ( $functions as $function )
			spl_autoload_unregister( $function );
		$functions = array_merge( array( array( 'PHPExcel_Autoloader', 'Load' ) ), $functions );
		foreach ( $functions as $function )
			$x = spl_autoload_register( $function );
		return $x;
	}

//    function Register()

	/**
	 * Autoload a class identified by name
	 *
	 * @param    string    $pClassName        Name of the object to load
	 */
	public static function Load( $pClassName ) {
		if ( (class_exists( $pClassName, FALSE )) || (strpos( $pClassName, 'PHPExcel' ) !== 0) ) {
			//    Either already loaded, or not a PHPExcel class request
			return FALSE;
		}

		$pClassFilePath = PHPEXCEL_ROOT .
				str_replace( '_', DIRECTORY_SEPARATOR, $pClassName ) .
				'.php';

		if ( (file_exists( $pClassFilePath ) === FALSE) || (is_readable( $pClassFilePath ) === FALSE) ) {
			//    Can't load
			return FALSE;
		}

		require($pClassFilePath);
	}

//    function Load()
}
